212210312331 has 8 divisors (see below), whose sum is σ = 282977008704. Its totient is φ = 141458578760.

The previous prime is 212210312317. The next prime is 212210312389. The reversal of 212210312331 is 133213012212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212210312331 - 2¹¹ = 212210310283 is a prime.

It is a super-2 number, since 2×212210312331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212210312298 and 212210312307.

It is not an unprimeable number, because it can be changed into a prime (212210319331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3707565 + ... + 3764366.

It is an arithmetic number, because the mean of its divisors is an integer number (35372126088).

Almost surely, 2^212210312331 is an apocalyptic number.

212210312331 is a deficient number, since it is larger than the sum of its proper divisors (70766696373).

212210312331 is an equidigital number, since it uses as much as digits as its factorization.

212210312331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7481401.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212210312331 its reverse (133213012212), we get a palindrome (345423324543).

The spelling of 212210312331 in words is "two hundred twelve billion, two hundred ten million, three hundred twelve thousand, three hundred thirty-one".